API	active pharmaceutical ingredient
I polymorphic form	benzocaine subjected to ball milling
II polymorphic form	benzocaine subjected to micro milling
III and IIIa polymorphic forms	benzocaine in initial form and form subjected to cryogenic grinding
EXP	excipient
DFT	density functional theory
FT-IR	Fourier transform infrared spectroscopy
HPLC-DAD	high-performance liquid chromatography with diode array detector
RH	relative humidity
T	temperature
PAMPA	parallel artificial membrane permeability assay
PXRD	X-ray powder diffraction